Stool



May 30, 1933- H. T. `HAL-LOWELL STOOL Filed Jan. l5. 1950 5 Sheets-Sheetl May 30, 1933 H. T. A HALLowELL 1,912,274

STOOL Filed Jan. l5, 1950 5 Sheets-Sheet 2 lll-972 May 30, 1933. H, T.HALLOWELL STOOL 5 Sheets-Sheet 3 Filed Jan. l5, 1930 May 30, 1933. T.HALLowELL STOOL Filed Jan. l5, 1930 5 Sheets-Sheet 4 L25 :Figa 1 lisaside vievv'fof I ny modifications otthe invention; and

Patented May 30, 1933 nownni)f mnnmownnnor Jmmrownnnnsmfvnnm,,Ass-1GNoRfro STANDRD :SYLVANIA A l fAptiicti-onnlefa January 15; 193e.jsrai No. 421,001. v

j My invention relates .partieulaly to' stools `and'cl1airsused infactories, although they can be used' in' other places without depart-5' ing from the 'essential features of "the invention. p l "One'objectof l.my invention 'is' to; niake a very substantial yielding back or :astool or chair, :and to so arrange'the means which allowsthe back 'toyield,` that'one side of the back Will `yield to a certain .extentindepend- I ently of the otherv side, in 'order'that it lv vill readilyaccommodate the person who-1s using y i thestool,` or otherseatstructure.

.the"backrest tothe frame othe'back section of the stool "so that AitWill'accornmodate itself 'tothe back of the occupantof 'thestooL A stillfurther .objectii's to" provide means tion.

` .The invention also relates to certain details o'construction.describedliereinafter. In theacoornpanyingdrawings:l n

i "'stoo'l, showing ltheiinprcnfed yielding hack; liggg'zisarearyievv',offtheistool; y Y FigB'is a sectional 'plain view of the back"'restrontheline lSLSQIgn 1';

, 30' 'Fig.' detached side vvienY the back Fig. 5 6 'is a sectionalvlietv on Ithe line 6516,

Fig. T is a sidel yieiv illustrating ainodi'fcation of'the'invention;Tig. '8 is rearview of the :n iodi'fica'tion "shown in'. Fig. 7';

'Fig's, 9 to l2-are Views illustratingurther .5F ig. :1 3isfagsectio'nzil View `illustrating a nio'diii'cationV of .thesto/pshownA in VVFig. S5, 4"the .section'fbeing onlinell; Fig/7. y v Thestoolshown in'th-drawingsis made iproper' Which is circular-in thelpresent inf stance, although itn1ay tbe of othershapes" withoutdeparting from the essential "featuresj of `the invention; Thiss'eat mayeither have" Afurther object of the invention is topivot Lfor limitingthe'nivenient 'the hackA sect-Wo members,Y one at so'ftihatl-ei'therlor-100th sides Will yield under .y pressure ofthe person occupying thestool. *Boltslll extend through the side members 7 head L12 and on thevholt is a Wing nut 13,*in the present instance,

ametal'licbottorn section or a Vvs ooden bottoni section, as desired.

i 21are A'the' le`gs, Which inthe present 'instance vare angular injcrossse'ction, .and rungs gleoiine'ct'th'e legs .and arel made of sheetinet'al as 'firmly support the stool on the floor.'

The details of the stool describedforrn no" jpa'rt'of my presentinvention.

sis'ts otWo angular side members; which lentend on either side of thestool 'and are Apivotedr to the two :hacklegs 2 kof thefstool" by pivotbo'lts, shown in detail inFig. f5.

The 'bolts are "enlarged at '8a and this portion of-tl'iebo'ltextendsthrough a. hole infthe side inelnber'7 of the lbackbut thisenlarged por-.iw tion is a greaterdepth `than the nietal of the-- sidesection, so that the boltwillV act asia spivotfor theback section.: Anut Gis mount- 'edfon the 'threaded portion ofthe-'bolt and the 4back lare connected togetherY 4byA a L back is below'tlhe seat ofthe stool.VThe back sec- Ition'is -.:yielding'l y connectedV to the stool'by eachside of the back,

of the back and through perforations inthe back legs 2 of the stool,andeach bolti has a and between 'the Wing nut and the back leg ofthestool is a -spring 14, which yields when pressure is applied to theback. Surrounding the springis a cup sha-pedstop 15, Whichlilnits themovement ot `the back, and theainount of movementcan 'be regulated iby'the'thumb nut. `This 'cup shaped stop also acts 'to enclose the spring1 andllirnitsthe compression of thejs Y AiIn1 `i,'g. l3'fIhaveillustratedxaniodicaf tin ofthe Stop vShown in Fig. f5 and in einem`25.75 V The `upper endsvof Atheside menibeis'of 651 against the side.fof thefleg andispivoted 20j surface. By this construction theback willinstance the stop is in the form of a sleeve 15a, which is locatedbetween the bolt 11 and the spring 14.

The back rest 9, which connects the two side members 7-7 of the backsection of the stool, has bearings 16 welded to its back and one arm 17of each bearing is perforated for the passage of a rivet or other pivot18,*which not only connects the two side members 7 of ttheback butalsoallows the back restto swing 'on said side members;

amount of movement of the back rest, the

bearings 16 have stop lugs 19 formed there@j on, which come incontactwith the side members 7 of the back section when moved to eitherextreme position. This back rest is curved as shown in Fig. 8, toaccommodate the occupants back and the edges are preferably rounded'soastoprovide a smooth not only yield under pressure but eitherside willyield toa certain extentindependently of the other side, and thebackrest will accommodate itself to the person using the stool. Y pReferring now to Figs. 7 and in Figs. l and 2. The back section k5er, ofthe stool, however, is made in theformof a U-shaped frame, as shown in Fig. 8, having an upper cross member 7 b and side members 7 a whichextend down on either side ofthe stool and are pivoted to the two backlegs 2 2 by bolts V8b. Eachbolt is passed through a hole in oneof theAarms 7 a and through ahole in the side flange of each rear leg 2.yAbove the pivot point of the arm 7 ais `a cross bar 10a., which is bentat each end toform angular 1. members 10b, which are Agpivotallyconnected by rivets 2'0 in the p-resent instance, The

*,boltsllaextend throughtheross bar 10a and through holes inthe rearlegs@ ofthe stool.A On this bolt is a thumb screw and b etween thisthumb screwlandthe back leg is a coil spring shown in detail kin Fig.13. In

the upperv endV of each side member ,7a Vof the back are a seriesy ofperforationsl, through one of, which passes a pivot bolt 22,011 which isa thumb nut 23. The bolt passes through bearings 16a von the back rest9a and stop lugs 19a project from the said bearings 16a andl limit thepivotal movement of theback fseat.

rest. It will be noticed thatthe members of the back section are bentoutwardly from the stool, so as to clear the seat of the stool, (throughpreventing the back section from pinching the clothing of the occupantof the In Figs 9 and 10 I have illustratedr a modification in which theside member 7c of the baclrsectio-n has a-right angle bent therein* asat 24, so thatwhile the major portion ofthe said side member is directlyback of the leg,y the lower ,portion rests k8, the stool i Vin thesefigures is thesame as that shown thereto by a bolt 8c. In this instancethe bolt llc is in the form of an eye bolt. A pivot pin 25 passesthrough the eye of the bolt and connects the bolt with the side memberof the back. On the bolt is a wing nut, a coil springand astop similarto that' shown in Fig. i

In Figs. 11 and 12 I have illustrated a 'still' further modification inwhich the side y'members 7d are' parallelwith the sidesof the rearlegs.and are'pivoted-thereto by a bolt 8d. That part of each side memberextending `.beyond the bolt is bent as at 7 e so as to rest Y in frontof the leg 2, and a headed bolt 11d extends through theleg and throughthe V portion 7 e o f the sidemembenand has a v ng -nut thereon and acoil spring and stop similar .to'thatillustrated in Fig. 5. i'

When itis desired to rigidly secure'the back section to the legsof thestool or other`l seat vstructure,,the bolts V11A and the spring andotherpa'rts are; removed and a plain bolt and nut 'substituted therefor,which secures the back rigidlyfto the stool.

I claim:l

f l. The combination in ya l seat structure having legs,y of a backsection having Side members; a bolt extending through each side memberlandthrough each'back'leg of the stool, eachJ bolt :being enlarged`whe1-eits 95 passes through ythe .side member of the back section, thehead ofeachbolt dBeing spaced from its;sidemember`; and means for securingthe/bolt' rigidly to the back leg 4of the stool. f Thelcombination ingaseat structure, of a seat. member, legs supportingsaid member, ayielding back-restfiomprsnstwo upright andgsubstantially rigid side,members pivotally secured respectively to two ofsaidlegs at points`below the seat, the securing means providing aloose kfitandf'pe'rmitti'n' 'independent1 movements ofsaid sidemeni ers so that whenpressure is applied to one side of the back-rest that side may yield toAallow` the backrest to assume a planeat an angle to the normal vplane ofsaid rest, Springs resiliently supporting the back-restin'v aforwardposition, and means associated withl the llegs and with the sidemembersfor limiting" thev rearward movement Aof said rest.

`3. The combination in a seat structure, of a seat member, legs of anglesection supporting said member, a .yielding back-rest comthe back-restto assume a plane at an angle to the normal plane of said rest, a secondpair of bolts extending through both of the flanges of each contactingpair at points intermediate the seat member and the first-named bolts,and a spring conned on each of said second bolts and exerting pressureupon the inner face of the leg flanges to resilently maintain theback-rest in a normal advanced position.

HOVARD T. HALLOWELL.

